<?php
/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @category   Zend
 * @package    Zend_Validate
 * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 * @version    $Id: Int.php 17470 2009-08-08 22:27:09Z thomas $
 */

/**
 * @see Zend_Validate_Abstract
 */
require_once 'Zend/Validate/Abstract.php';

/**
 * @see Zend_Locale_Format
 */
require_once 'Zend/Locale/Format.php';

/**
 * @category   Zend
 * @package    Zend_Validate
 * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
class Zend_Validate_Int extends Zend_Validate_Abstract
{
	const INVALID = 'intInvalid';
	const NOT_INT = 'notInt';

	/**
	 * @var array
	 */
	protected $_messageTemplates = array(
	self::INVALID => "Invalid type given, value should be a string or a integer",
	self::NOT_INT => "'%value%' does not appear to be an integer"
	);

	protected $_locale;

	/**
	 * Constructor for the integer validator
	 *
	 * @param string|Zend_Locale $locale
	 */
	public function __construct($locale = null)
	{
		if ($locale !== null) {
			$this->setLocale($locale);
		}
	}

	/**
	 * Returns the set locale
	 */
	public function getLocale()
	{
		return $this->_locale;
	}

	/**
	 * Sets the locale to use
	 *
	 * @param string|Zend_Locale $locale
	 */
	public function setLocale($locale = null)
	{
		require_once 'Zend/Locale.php';
		$this->_locale = Zend_Locale::findLocale($locale);
		return $this;
	}

	/**
	 * Defined by Zend_Validate_Interface
	 *
	 * Returns true if and only if $value is a valid integer
	 *
	 * @param  string|integer $value
	 * @return boolean
	 */
	public function isValid($value)
	{
		if (!is_string($value) && !is_int($value) && !is_float($value)) {
			$this->_error(self::INVALID);
			return false;
		}

		$this->_setValue($value);
		if ($this->_locale === null) {
			$locale        = localeconv();
			$valueFiltered = str_replace($locale['decimal_point'], '.', $value);
			$valueFiltered = str_replace($locale['thousands_sep'], '', $valueFiltered);

			if (strval(intval($valueFiltered)) != $valueFiltered) {
				$this->_error(self::NOT_INT);
				return false;
			}

		} else {
			try {
				if (!Zend_Locale_Format::isInteger($value, array('locale' => 'en')) &&
				!Zend_Locale_Format::isInteger($value, array('locale' => $this->_locale))) {
					$this->_error(self::NOT_INT);
					return false;
				}
			} catch (Zend_Locale_Exception $e) {
				$this->_error(self::NOT_INT);
				return false;
			}
		}

		return true;
	}
}
